html, body {
    color: #505050;
    line-height: 1.75em;
    background: #ebebeb;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.main-header {
    text-align: center;
    padding: 42px 0;
    background: #ffffff;
}

.main-header .branding {
    font-size: 3.5em;
    color: #303030;
}

a {
    color: #e67e22;
    outline: none;
    text-decoration: none; /*当元素获得焦点的时候，焦点框为0.*/
}

.main-header .branding .img {
    max-width: 100%;
}

a:active, a:focus, a img {
    outline: none;
}

.main-navigation {
    text-align: center;
    background: #ffffff;
    border-top: 1px solid #ebebeb;
    border-bottom: 3px solid #e1e1e1;
    margin-bottom: 35px;
}

.main-navigation .menu {
    padding: 0;
    margin: 0;
}

.main-navigation .menu li.nav-current {
    border-bottom: 3px solid #e67e22;
    margin-bottom: -2px;
}

.main-navigation .menu li {
    list-style: none; /*设置样式为空，即没有点*/
    line-height: 4em;
    display: inline-block;
    position: relative;
}

.main-navigation .menu li a {
    color: #505050;
    line-height: 4em;
    display: block;
    padding: 0 21px;
}

.post {
    padding: 35px;
    background: #ffffff;
    margin-bottom: 35px;
    position: relative; /*相对定位*/
    overflow: hidden;
}

.post .post-header {
    text-align: center;
}

.post .post-header .post-title {
    margin: 0;
    font-size: 2.5em;
    line-height: 1em;
}

.post .post-header .post-title a {
    color: #303030;
}

.post .post-header .post-meta {
    color: #959595;
    margin: 14px 0 0px;
}

.post-content {
    font: 400 18px/1.62 "Glyphicons Halflings";
    color: #444443;
}

.post-content p {
    margin-top: 0;
    margin-bottom: 1.46em;
}

.btn-default {
    border: 1px solid #e67e22;
    background: #e67e22;
    color: #ffffff;
    transition: all 0.2s ease-in-out;
    -webkit-transition: all 0.2s ease-in-out;
}

.btn {
    padding: 7px 14px;
    border-radius: 2px;
}

.post .post-footer {
    margin-top: 30px;
    border-top: 1px solid #ebebeb;
    padding: 21px 0 0;
}

.post .post-footer .tag-list {
    color: #959595;
    line-height: 28px;
}

.sidebar .widget {
    background: #ffffff;
    padding: 21px 35px;
}

.widget {
    margin-bottom: 35px;
}

.widget .title {
    margin-top: 0px;
    padding-bottom: 7px;
    border-bottom: 1px solid #ebebeb;
    margin-bottom: 21px;
    position: relative;
}

.widget .tag-cloud a {
    border: 1px solid #ebebeb;
    padding: 2px 7px;
    color: #959595;
    line-height: 1.5em;
    display: inline-block;
    margin: 0 7px 7px 0;
}

.main-footer {
    background: #202020;
    padding: 35px 0 0;
    color: #959595;
}

.main-footer .widget {
    padding: 0px 30px;
}

.widget {
    margin-bottom: 35px;
}

.main-footer .widget .title {
    color: #ffffff;
    border-bottom: 1px #303030;
}

.widget .title {
    margin-top: 0;
    padding-bottom: 7px;
    border-bottom: 1px solid #ebebeb;
    margin-bottom: 21px;
    position: relative;
}

.main-footer .widget .recent-post .recent-single-post {
    border-bottom: 1px dashed #303030;
}

.main-footer .recent-post .recent-single-post {
    border-bottom: 1px dashed #ebebeb;
    padding-bottom: 14px;
    margin-bottom: 14px;
}

.main-footer .widget .recent-post .recent-single-post .post-title {
    color: #959595;
}

.widget .recent-post .recent-single-post .post-title {
    color: #505050;
}

.main-footer .widget .recent-post .recent-single-post .date {
    color: #505050;
}

.widget .title:after {
    content: "";
    width: 90px;
    height: 1px;
    background: #e67e22;
    position: absolute;
    left: 0;
    bottom: -1px;
}

.main-footer .widget .tag-cloud a {
    border: 1px solid #303030;
}